<!DOCTYPE html>
<html>
<head lang="en">
  <meta charset="UTF-8">
  <title></title>
</head>
<body>

<p id="max">P-MAX</p>
<p id="min">P-MIN</p>

<script src="js/jquery-1.11.3.js"></script>
<script src="js/5.js"></script>
<script>
  var arr = [10, 30, 50];
  console.log( jQuery.max(arr) );
  console.log( $.min(arr) );
</script>
</body>
</html>